%% %% This is file `xtrex2.tex', %% generated with the docstrip utility. %% %% The original source files were: %% %% extract.dtx (with options: `xtrex2') %% %% --------------------------------------- %% Copyright (C) 2004-2019 Hendri Adriaens %% --------------------------------------- %% %% This work may be distributed and/or modified under the %% conditions of the LaTeX Project Public License, either version 1.3 %% of this license or (at your option) any later version. %% The latest version of this license is in %% http://www.latex-project.org/lppl.txt %% and version 1.3 or later is part of all distributions of LaTeX %% version 2003/12/01 or later. %% %% This work has the LPPL maintenance status "maintained". %% %% This Current Maintainer of this work is Hendri Adriaens. %% %% This work consists of the file extract.dtx and the derived files %% extract.sty, xtrex1.tex, xtrex2.tex, xtrex3.tex, xtrex4.tex, %% xtrex5.tex, xtrex6.tex and xtrex7.tex. %% %% The following files constitute the extract package and must be %% distributed as a whole: readme, extract.dtx, extract.pdf and %% extract.sty. %% \documentclass{article} \usepackage[ active, generate=file, extract-env=exercise, extract-cmd=section, extract-cmdline=label ]{extract} \begin{extract*} \newtheorem{exercise}{Exercise} \end{extract*} \begin{document} \section{Theory} \label{sec:1} Some text. \section{Exercises} \begin{exercise} Use the results from section \ref{sec:1} to show that\dots \end{exercise} Some text. \end{document} \endinput %% %% End of file `xtrex2.tex'.